Testwell Instruments

WLM Series - Water Level Meters - Datasheet

Ranked #1 b y University Field Course: Best for accuracy, ease of use and performance. Unique Bridge Proof Probe: Testwell sets a new standard for probe performance during pump tests and for well sounding. Best Resolution & Accuracy: 1/100 ft or 1mm & 5x more accurate than white tapes. Choice of Pro be diameters Standard 5/8, 7 /16, 3/8 or ...